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Proceedings Paper

Synthesis of transparent nanocomposite monoliths for gamma scintillation
Author(s): Chao Liu; Tibor J. Hajagos; David Kishpaugh; Yunxia Jin; Wei Hu; Qi Chen; Qibing Pei
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Paper Abstract

During the past decade, inorganic nanoparticles/polymer nanocomposites have been intensively studied to provide a low cost, high performance alternative for gamma scintillation. However, the aggregation of nanoparticles often occurs even at low nanoparticle concentrations and thus deteriorates the transparency and performance of these nanocomposite scintillators. Here we report an efficient fabrication protocol of transparent nanocomposite monoliths based on surface modified hafnium oxide nanoparticles. Using hafnium oxide nanoparticles with surface-grafted methacrylate groups, highly transparent bulk-size nanocomposite monoliths (2 mm thick, transmittance at 550 nm >75%) are fabricated with nanoparticle loadings up to 40 wt% (net hafnium wt% up to 28.5%). These nanocomposite monoliths of 1 cm diameter and 2 mm thickness are capable of producing a full energy photopeak for 662 keV gamma rays, with the best deconvoluted photopeak energy resolution reaching 8%.

Paper Details

Date Published: 26 August 2015
PDF: 9 pages
Proc. SPIE 9593, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVII, 959312 (26 August 2015); doi: 10.1117/12.2189664
Show Author Affiliations
Chao Liu, Univ. of California, Los Angeles (United States)
Tibor J. Hajagos, Univ. of California, Los Angeles (United States)
David Kishpaugh, Univ. of California, Los Angeles (United States)
Yunxia Jin, Univ. of California, Los Angeles (United States)
Fudan Univ. (China)
Wei Hu, Univ. of California, Los Angeles (United States)
Qi Chen, Univ. of California, Los Angeles (United States)
Qibing Pei, Univ. of California, Los Angeles (United States)


Published in SPIE Proceedings Vol. 9593:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVII
Larry Franks; Ralph B. James; Michael Fiederle; Arnold Burger, Editor(s)

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